| (o) | Inventories |
Inventories are stated at the lower of cost and net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less the estimated costs necessary to make the sale. Cost of inventory is determined using the weighted average method and comprises all costs of purchase and other costs incurred in bringing the inventories to their present location and condition. Costs of purchased inventory are determined after deducting rebates and discounts. At 31 December 2017 and 2016, inventories mainly consisted of mobile phones, sim-cards, and other devices.